forked from openlp/openlp
639 lines
26 KiB
Python
639 lines
26 KiB
Python
# -*- coding: utf-8 -*-
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# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4
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###############################################################################
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# OpenLP - Open Source Lyrics Projection #
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# --------------------------------------------------------------------------- #
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# Copyright (c) 2008-2014 Raoul Snyman #
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# Portions copyright (c) 2008-2014 Tim Bentley, Gerald Britton, Jonathan #
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# Corwin, Samuel Findlay, Michael Gorven, Scott Guerrieri, Matthias Hub, #
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# Meinert Jordan, Armin Köhler, Erik Lundin, Edwin Lunando, Brian T. Meyer. #
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# Joshua Miller, Stevan Pettit, Andreas Preikschat, Mattias Põldaru, #
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# Christian Richter, Philip Ridout, Simon Scudder, Jeffrey Smith, #
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# Maikel Stuivenberg, Martin Thompson, Jon Tibble, Dave Warnock, #
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# Frode Woldsund, Martin Zibricky #
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# --------------------------------------------------------------------------- #
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# This program is free software; you can redistribute it and/or modify it #
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# under the terms of the GNU General Public License as published by the Free #
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# Software Foundation; version 2 of the License. #
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# #
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# This program is distributed in the hope that it will be useful, but WITHOUT #
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for #
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# more details. #
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# #
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# You should have received a copy of the GNU General Public License along #
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# with this program; if not, write to the Free Software Foundation, Inc., 59 #
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# Temple Place, Suite 330, Boston, MA 02111-1307 USA #
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###############################################################################
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"""
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The :mod:`maindisplay` module provides the functionality to display screens
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and play multimedia within OpenLP.
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"""
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import cgi
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import logging
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import os
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import sys
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from PyQt4 import QtCore, QtGui, QtWebKit, QtOpenGL
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from PyQt4.phonon import Phonon
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from openlp.core.lib import Receiver, build_html, ServiceItem, image_to_byte, \
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translate, PluginManager, expand_tags, ImageSource
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from openlp.core.lib.theme import BackgroundType
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from openlp.core.lib.settings import Settings
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from openlp.core.ui import HideMode, ScreenList, AlertLocation
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log = logging.getLogger(__name__)
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#http://www.steveheffernan.com/html5-video-player/demo-video-player.html
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#http://html5demos.com/two-videos
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class Display(QtGui.QGraphicsView):
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"""
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This is a general display screen class. Here the general display settings
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will done. It will be used as specialized classes by Main Display and
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Preview display.
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"""
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def __init__(self, parent, live, controller):
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if live:
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QtGui.QGraphicsView.__init__(self)
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# Overwrite the parent() method.
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self.parent = lambda: parent
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else:
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QtGui.QGraphicsView.__init__(self, parent)
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self.isLive = live
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self.controller = controller
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self.screen = {}
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self.plugins = PluginManager.get_instance().plugins
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# FIXME: On Mac OS X (tested on 10.7) the display screen is corrupt with
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# OpenGL. Only white blank screen is shown on the 2nd monitor all the
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# time. We need to investigate more how to use OpenGL properly on Mac OS
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# X.
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if sys.platform != 'darwin':
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self.setViewport(QtOpenGL.QGLWidget())
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def setup(self):
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"""
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Set up and build the screen base
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"""
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log.debug(u'Start Display base setup (live = %s)' % self.isLive)
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self.setGeometry(self.screen[u'size'])
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log.debug(u'Setup webView')
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self.webView = QtWebKit.QWebView(self)
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self.webView.setGeometry(0, 0,
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self.screen[u'size'].width(), self.screen[u'size'].height())
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self.webView.settings().setAttribute(
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QtWebKit.QWebSettings.PluginsEnabled, True)
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palette = self.webView.palette()
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palette.setBrush(QtGui.QPalette.Base, QtCore.Qt.transparent)
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self.webView.page().setPalette(palette)
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self.webView.setAttribute(QtCore.Qt.WA_OpaquePaintEvent, False)
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self.page = self.webView.page()
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self.frame = self.page.mainFrame()
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if self.isLive and log.getEffectiveLevel() == logging.DEBUG:
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self.webView.settings().setAttribute(
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QtWebKit.QWebSettings.DeveloperExtrasEnabled, True)
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QtCore.QObject.connect(self.webView,
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QtCore.SIGNAL(u'loadFinished(bool)'), self.isWebLoaded)
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self.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
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self.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
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self.frame.setScrollBarPolicy(QtCore.Qt.Vertical,
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QtCore.Qt.ScrollBarAlwaysOff)
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self.frame.setScrollBarPolicy(QtCore.Qt.Horizontal,
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QtCore.Qt.ScrollBarAlwaysOff)
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def resizeEvent(self, event):
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self.webView.setGeometry(0, 0, self.width(), self.height())
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def isWebLoaded(self):
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"""
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Called by webView event to show display is fully loaded
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"""
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log.debug(u'Webloaded')
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self.webLoaded = True
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class MainDisplay(Display):
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"""
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This is the display screen as a specialized class from the Display class
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"""
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def __init__(self, parent, imageManager, live, controller):
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Display.__init__(self, parent, live, controller)
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self.imageManager = imageManager
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self.screens = ScreenList()
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self.rebuildCSS = False
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self.hideMode = None
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self.override = {}
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self.retranslateUi()
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self.mediaObject = None
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if live:
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self.audioPlayer = AudioPlayer(self)
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else:
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self.audioPlayer = None
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self.firstTime = True
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self.webLoaded = True
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self.setStyleSheet(u'border: 0px; margin: 0px; padding: 0px;')
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windowFlags = QtCore.Qt.FramelessWindowHint | QtCore.Qt.Tool | \
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QtCore.Qt.WindowStaysOnTopHint
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# Fix for bug #1014422.
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x11_bypass_default = True
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if sys.platform.startswith(u'linux'):
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# Default to False on Gnome.
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x11_bypass_default = bool(not
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os.environ.get(u'GNOME_DESKTOP_SESSION_ID'))
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# Default to False on XFce
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if os.environ.get(u'DESKTOP_SESSION') == u'xfce':
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x11_bypass_default = False
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if Settings().value(u'advanced/x11 bypass wm',
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QtCore.QVariant(x11_bypass_default)).toBool():
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windowFlags |= QtCore.Qt.X11BypassWindowManagerHint
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# TODO: The following combination of windowFlags works correctly
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# on Mac OS X. For next OpenLP version we should test it on other
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# platforms. For OpenLP 2.0 keep it only for OS X to not cause any
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# regressions on other platforms.
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if sys.platform == 'darwin':
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windowFlags = QtCore.Qt.FramelessWindowHint | QtCore.Qt.Window
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# For primary screen ensure it stays above the OS X dock
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# and menu bar
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if self.screens.current[u'primary']:
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self.setWindowState(QtCore.Qt.WindowFullScreen)
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self.setWindowFlags(windowFlags)
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self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
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self.setTransparency(False)
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if self.isLive:
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QtCore.QObject.connect(Receiver.get_receiver(),
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QtCore.SIGNAL(u'live_display_hide'), self.hideDisplay)
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QtCore.QObject.connect(Receiver.get_receiver(),
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QtCore.SIGNAL(u'live_display_show'), self.showDisplay)
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QtCore.QObject.connect(Receiver.get_receiver(),
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QtCore.SIGNAL(u'update_display_css'), self.cssChanged)
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QtCore.QObject.connect(Receiver.get_receiver(),
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QtCore.SIGNAL(u'config_updated'), self.configChanged)
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def setTransparency(self, enabled):
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if enabled:
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self.setAutoFillBackground(False)
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self.setStyleSheet("QGraphicsView {background: transparent; border: 0px;}")
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else:
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self.setAttribute(QtCore.Qt.WA_NoSystemBackground, False)
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self.setStyleSheet("QGraphicsView {}")
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self.setAttribute(QtCore.Qt.WA_TranslucentBackground, enabled)
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self.repaint()
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def cssChanged(self):
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"""
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We may need to rebuild the CSS on the live display.
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"""
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self.rebuildCSS = True
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def configChanged(self):
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"""
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Call the plugins to rebuild the Live display CSS as the screen has
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not been rebuild on exit of config.
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"""
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if self.rebuildCSS and self.plugins:
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for plugin in self.plugins:
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plugin.refreshCss(self.frame)
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self.rebuildCSS = False
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def retranslateUi(self):
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"""
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Setup the interface translation strings.
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"""
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self.setWindowTitle(translate('OpenLP.MainDisplay', 'OpenLP Display'))
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def setup(self):
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"""
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Set up and build the output screen
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"""
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log.debug(u'Start MainDisplay setup (live = %s)' % self.isLive)
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self.screen = self.screens.current
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self.setVisible(False)
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Display.setup(self)
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if self.isLive:
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# Build the initial frame.
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background_color = QtGui.QColor()
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background_color.setNamedColor(Settings().value(
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u'advanced/default color',
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QtCore.QVariant(u'#ffffff')).toString())
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if not background_color.isValid():
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background_color = QtCore.Qt.white
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image_file = Settings().value(u'advanced/default image',
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QtCore.QVariant(u':/graphics/openlp-splash-screen.png'))\
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.toString()
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splash_image = QtGui.QImage(image_file)
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self.initialFrame = QtGui.QImage(
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self.screen[u'size'].width(),
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self.screen[u'size'].height(),
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QtGui.QImage.Format_ARGB32_Premultiplied)
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painter_image = QtGui.QPainter()
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painter_image.begin(self.initialFrame)
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painter_image.fillRect(self.initialFrame.rect(), background_color)
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painter_image.drawImage(
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(self.screen[u'size'].width() - splash_image.width()) / 2,
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(self.screen[u'size'].height() - splash_image.height()) / 2,
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splash_image)
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serviceItem = ServiceItem()
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serviceItem.bg_image_bytes = image_to_byte(self.initialFrame)
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self.webView.setHtml(build_html(serviceItem, self.screen,
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self.isLive, None, plugins=self.plugins))
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self.__hideMouse()
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log.debug(u'Finished MainDisplay setup')
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def text(self, slide, animate=True):
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"""
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Add the slide text from slideController
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``slide``
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The slide text to be displayed
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``animate``
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Perform transitions if applicable when setting the text
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"""
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log.debug(u'text to display')
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# Wait for the webview to update before displaying text.
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while not self.webLoaded:
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Receiver.send_message(u'openlp_process_events')
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self.setGeometry(self.screen[u'size'])
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if animate:
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self.frame.evaluateJavaScript(u'show_text("%s")' %
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slide.replace(u'\\', u'\\\\').replace(u'\"', u'\\\"'))
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else:
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# This exists for https://bugs.launchpad.net/openlp/+bug/1016843
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# For unknown reasons if evaluateJavaScript is called
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# from the themewizard, then it causes a crash on
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# Windows if there are many items in the service to re-render.
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# Setting the div elements direct seems to solve the issue
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self.frame.findFirstElement("#lyricsmain").setInnerXml(slide)
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self.frame.findFirstElement("#lyricsoutline").setInnerXml(slide)
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self.frame.findFirstElement("#lyricsshadow").setInnerXml(slide)
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def alert(self, text, location):
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"""
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Display an alert.
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``text``
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The text to be displayed.
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"""
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log.debug(u'alert to display')
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# First we convert <>& marks to html variants, then apply
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# formattingtags, finally we double all backslashes for JavaScript.
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text_prepared = expand_tags(
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cgi.escape(text)).replace(u'\\', u'\\\\').replace(u'\"', u'\\\"')
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if self.height() != self.screen[u'size'].height() or not \
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self.isVisible():
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shrink = True
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js = u'show_alert("%s", "%s")' % (text_prepared, u'top')
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else:
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shrink = False
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js = u'show_alert("%s", "")' % text_prepared
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height = self.frame.evaluateJavaScript(js)
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if shrink:
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if text:
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alert_height = int(height.toString())
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self.resize(self.width(), alert_height)
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self.setVisible(True)
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if location == AlertLocation.Middle:
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self.move(self.screen[u'size'].left(),
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(self.screen[u'size'].height() - alert_height) / 2)
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elif location == AlertLocation.Bottom:
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self.move(self.screen[u'size'].left(),
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self.screen[u'size'].height() - alert_height)
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else:
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self.setVisible(False)
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self.setGeometry(self.screen[u'size'])
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def directImage(self, path, background):
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"""
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API for replacement backgrounds so Images are added directly to cache.
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"""
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self.imageManager.addImage(path, ImageSource.ImagePlugin, background)
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if not hasattr(self, u'serviceItem'):
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return False
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self.override[u'image'] = path
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self.override[u'theme'] = self.serviceItem.themedata.background_filename
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self.image(path)
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# Update the preview frame.
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if self.isLive:
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self.parent().updatePreview()
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return True
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def image(self, path):
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"""
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Add an image as the background. The image has already been added to the
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cache.
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``path``
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The path to the image to be displayed. **Note**, the path is only
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passed to identify the image. If the image has changed it has to be
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re-added to the image manager.
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"""
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log.debug(u'image to display')
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image = self.imageManager.getImageBytes(path, ImageSource.ImagePlugin)
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self.controller.mediaController.video_reset(self.controller)
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self.displayImage(image)
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def displayImage(self, image):
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"""
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Display an image, as is.
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"""
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self.setGeometry(self.screen[u'size'])
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if image:
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js = u'show_image("data:image/png;base64,%s");' % image
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else:
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js = u'show_image("");'
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self.frame.evaluateJavaScript(js)
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def resetImage(self):
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"""
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Reset the backgound image to the service item image. Used after the
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image plugin has changed the background.
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"""
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log.debug(u'resetImage')
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if hasattr(self, u'serviceItem'):
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self.displayImage(self.serviceItem.bg_image_bytes)
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else:
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self.displayImage(None)
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# clear the cache
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self.override = {}
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def preview(self):
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"""
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Generates a preview of the image displayed.
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"""
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log.debug(u'preview for %s', self.isLive)
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was_visible = self.isVisible()
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Receiver.send_message(u'openlp_process_events')
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# We must have a service item to preview.
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if self.isLive and hasattr(self, u'serviceItem'):
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# Wait for the fade to finish before geting the preview.
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# Important otherwise preview will have incorrect text if at all!
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if self.serviceItem.themedata and \
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self.serviceItem.themedata.display_slide_transition:
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while self.frame.evaluateJavaScript(u'show_text_complete()') \
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.toString() == u'false':
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Receiver.send_message(u'openlp_process_events')
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# Wait for the webview to update before getting the preview.
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# Important otherwise first preview will miss the background !
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while not self.webLoaded:
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Receiver.send_message(u'openlp_process_events')
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# if was hidden keep it hidden
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if self.isLive:
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if self.hideMode:
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self.hideDisplay(self.hideMode)
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# Only continue if the visibility wasn't changed during method call.
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elif was_visible == self.isVisible():
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# Single screen active
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if self.screens.display_count == 1:
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# Only make visible if setting enabled.
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if Settings().value(u'general/display on monitor',
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QtCore.QVariant(True)).toBool():
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self.setVisible(True)
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else:
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self.setVisible(True)
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return QtGui.QPixmap.grabWidget(self)
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def buildHtml(self, serviceItem, image_path=u''):
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"""
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Store the serviceItem and build the new HTML from it. Add the
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HTML to the display
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"""
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log.debug(u'buildHtml')
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self.webLoaded = False
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self.initialFrame = None
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self.serviceItem = serviceItem
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background = None
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# We have an image override so keep the image till the theme changes.
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if self.override:
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# We have an video override so allow it to be stopped.
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if u'video' in self.override:
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Receiver.send_message(u'video_background_replaced')
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self.override = {}
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# We have a different theme.
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elif self.override[u'theme'] != \
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serviceItem.themedata.background_filename:
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Receiver.send_message(u'live_theme_changed')
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self.override = {}
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else:
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# replace the background
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background = self.imageManager.getImageBytes(
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self.override[u'image'], ImageSource.ImagePlugin)
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self.setTransparency(self.serviceItem.themedata.background_type ==
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BackgroundType.to_string(BackgroundType.Transparent))
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if self.serviceItem.themedata.background_filename:
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self.serviceItem.bg_image_bytes = self.imageManager.getImageBytes(
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self.serviceItem.themedata.background_filename,
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ImageSource.Theme)
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if image_path:
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image_bytes = self.imageManager.getImageBytes(
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image_path, ImageSource.ImagePlugin)
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else:
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image_bytes = None
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html = build_html(self.serviceItem, self.screen, self.isLive,
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background, image_bytes, self.plugins)
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log.debug(u'buildHtml - pre setHtml')
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self.webView.setHtml(html)
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log.debug(u'buildHtml - post setHtml')
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if serviceItem.foot_text:
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self.footer(serviceItem.foot_text)
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# if was hidden keep it hidden
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if self.hideMode and self.isLive and not serviceItem.is_media():
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if Settings().value(u'general/auto unblank',
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QtCore.QVariant(False)).toBool():
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Receiver.send_message(u'slidecontroller_live_unblank')
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else:
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self.hideDisplay(self.hideMode)
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self.__hideMouse()
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def footer(self, text):
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"""
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Display the Footer
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"""
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log.debug(u'footer')
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js = u'show_footer(\'' + \
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text.replace(u'\\', u'\\\\').replace(u'\'', u'\\\'') + u'\')'
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self.frame.evaluateJavaScript(js)
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def hideDisplay(self, mode=HideMode.Screen):
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"""
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Hide the display by making all layers transparent
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Store the images so they can be replaced when required
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"""
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log.debug(u'hideDisplay mode = %d', mode)
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if self.screens.display_count == 1:
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# Only make visible if setting enabled.
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if not Settings().value(u'general/display on monitor',
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QtCore.QVariant(True)).toBool():
|
|
return
|
|
if mode == HideMode.Screen:
|
|
self.frame.evaluateJavaScript(u'show_blank("desktop");')
|
|
self.setVisible(False)
|
|
elif mode == HideMode.Blank or self.initialFrame:
|
|
self.frame.evaluateJavaScript(u'show_blank("black");')
|
|
else:
|
|
self.frame.evaluateJavaScript(u'show_blank("theme");')
|
|
if mode != HideMode.Screen:
|
|
if self.isHidden():
|
|
self.setVisible(True)
|
|
self.webView.setVisible(True)
|
|
self.hideMode = mode
|
|
|
|
def showDisplay(self):
|
|
"""
|
|
Show the stored layers so the screen reappears as it was
|
|
originally.
|
|
Make the stored images None to release memory.
|
|
"""
|
|
log.debug(u'showDisplay')
|
|
if self.screens.display_count == 1:
|
|
# Only make visible if setting enabled.
|
|
if not Settings().value(u'general/display on monitor',
|
|
QtCore.QVariant(True)).toBool():
|
|
return
|
|
self.frame.evaluateJavaScript('show_blank("show");')
|
|
if self.isHidden():
|
|
self.setVisible(True)
|
|
self.hideMode = None
|
|
# Trigger actions when display is active again.
|
|
if self.isLive:
|
|
Receiver.send_message(u'live_display_active')
|
|
|
|
def __hideMouse(self):
|
|
"""
|
|
Hide mouse cursor when moved over display.
|
|
"""
|
|
if Settings().value(u'advanced/hide mouse',
|
|
QtCore.QVariant(False)).toBool():
|
|
self.setCursor(QtCore.Qt.BlankCursor)
|
|
self.frame.evaluateJavaScript('document.body.style.cursor = "none"')
|
|
else:
|
|
self.setCursor(QtCore.Qt.ArrowCursor)
|
|
self.frame.evaluateJavaScript('document.body.style.cursor = "auto"')
|
|
|
|
|
|
class AudioPlayer(QtCore.QObject):
|
|
"""
|
|
This Class will play audio only allowing components to work with a
|
|
soundtrack independent of the user interface.
|
|
"""
|
|
log.info(u'AudioPlayer Loaded')
|
|
|
|
def __init__(self, parent):
|
|
"""
|
|
The constructor for the display form.
|
|
|
|
``parent``
|
|
The parent widget.
|
|
"""
|
|
log.debug(u'AudioPlayer Initialisation started')
|
|
QtCore.QObject.__init__(self, parent)
|
|
self.currentIndex = -1
|
|
self.playlist = []
|
|
self.repeat = False
|
|
self.mediaObject = Phonon.MediaObject()
|
|
self.mediaObject.setTickInterval(100)
|
|
self.audioObject = Phonon.AudioOutput(Phonon.VideoCategory)
|
|
Phonon.createPath(self.mediaObject, self.audioObject)
|
|
QtCore.QObject.connect(self.mediaObject,
|
|
QtCore.SIGNAL(u'aboutToFinish()'), self.onAboutToFinish)
|
|
QtCore.QObject.connect(self.mediaObject,
|
|
QtCore.SIGNAL(u'finished()'), self.onFinished)
|
|
|
|
def __del__(self):
|
|
"""
|
|
Shutting down so clean up connections
|
|
"""
|
|
self.stop()
|
|
for path in self.mediaObject.outputPaths():
|
|
path.disconnect()
|
|
|
|
def onAboutToFinish(self):
|
|
"""
|
|
Just before the audio player finishes the current track, queue the next
|
|
item in the playlist, if there is one.
|
|
"""
|
|
self.currentIndex += 1
|
|
if len(self.playlist) > self.currentIndex:
|
|
self.mediaObject.enqueue(self.playlist[self.currentIndex])
|
|
|
|
def onFinished(self):
|
|
if self.repeat:
|
|
log.debug(u'Repeat is enabled... here we go again!')
|
|
self.mediaObject.clearQueue()
|
|
self.mediaObject.clear()
|
|
self.currentIndex = -1
|
|
self.play()
|
|
|
|
def connectVolumeSlider(self, slider):
|
|
slider.setAudioOutput(self.audioObject)
|
|
|
|
def reset(self):
|
|
"""
|
|
Reset the audio player, clearing the playlist and the queue.
|
|
"""
|
|
self.currentIndex = -1
|
|
self.playlist = []
|
|
self.stop()
|
|
self.mediaObject.clear()
|
|
|
|
def play(self):
|
|
"""
|
|
We want to play the file so start it
|
|
"""
|
|
log.debug(u'AudioPlayer.play() called')
|
|
if self.currentIndex == -1:
|
|
self.onAboutToFinish()
|
|
self.mediaObject.play()
|
|
|
|
def pause(self):
|
|
"""
|
|
Pause the Audio
|
|
"""
|
|
log.debug(u'AudioPlayer.pause() called')
|
|
self.mediaObject.pause()
|
|
|
|
def stop(self):
|
|
"""
|
|
Stop the Audio and clean up
|
|
"""
|
|
log.debug(u'AudioPlayer.stop() called')
|
|
self.mediaObject.stop()
|
|
|
|
def addToPlaylist(self, filenames):
|
|
"""
|
|
Add another file to the playlist.
|
|
|
|
``filenames``
|
|
A list with files to be added to the playlist.
|
|
"""
|
|
if not isinstance(filenames, list):
|
|
filenames = [filenames]
|
|
self.playlist.extend(map(Phonon.MediaSource, filenames))
|
|
|
|
def next(self):
|
|
if not self.repeat and self.currentIndex + 1 >= len(self.playlist):
|
|
return
|
|
isPlaying = self.mediaObject.state() == Phonon.PlayingState
|
|
self.currentIndex += 1
|
|
if self.repeat and self.currentIndex == len(self.playlist):
|
|
self.currentIndex = 0
|
|
self.mediaObject.clearQueue()
|
|
self.mediaObject.clear()
|
|
self.mediaObject.enqueue(self.playlist[self.currentIndex])
|
|
if isPlaying:
|
|
self.mediaObject.play()
|
|
|
|
def goTo(self, index):
|
|
isPlaying = self.mediaObject.state() == Phonon.PlayingState
|
|
self.mediaObject.clearQueue()
|
|
self.mediaObject.clear()
|
|
self.currentIndex = index
|
|
self.mediaObject.enqueue(self.playlist[self.currentIndex])
|
|
if isPlaying:
|
|
self.mediaObject.play()
|
|
|
|
def connectSlot(self, signal, slot):
|
|
QtCore.QObject.connect(self.mediaObject, signal, slot)
|